Synchronizing detector circuit

Details Synchronizing detector circuit Synchronizing detector circuit

1974-09-09

1976-06-01

Libman, George H.

Facsimile and static presentation processing

Static presentation processing

Attribute control

328133, 329 50, 307232, H04N 950, H03D 318, H03D 1300

Patent

active

039613607

ABSTRACT:
In a synchronizing detector circuit which has at least two differential transistors, a pair of constant current transistors are connected to the differential transistors, and an output transistor is connected to the junctures between the differential and constant current transistors and to a filter circuit for detection. A synchronizing detector circuit comprises a compensating circuit incorporated between the junctures and the filter circuit and includes a constant current absorbing circuit, so as to prevent an offset output voltage of the filter circuit due to noise.

REFERENCES:
patent: 3610955 (1971-10-01), Blaser
patent: 3730989 (1973-01-01), Rhee
patent: 3735150 (1973-05-01), Harris
patent: 3863080 (1975-01-01), Steckler

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